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Displays file icons in asp.net on GridView

I can't to display file icons according to file extensions in asp.net GridView.
The structure of GridView is nested
The tutorial is Displays file icons in asp.net
The error is :
Object reference not set to an instance of an object
In this line of code-behind :
if (!String.IsNullOrEmpty(lnkDownload.Text))
My code below.
Can you help me?
Thank you in advance for any help, really appreciated.
<asp:TemplateField>
<ItemTemplate>
<img alt="" style="cursor: pointer" src="images/plus.png" />
<asp:Panel ID="pnlOrders" runat="server" Style="display: none">
<asp:GridView ID="gvOrders" runat="server"
AutoGenerateColumns="false" CssClass="mGrid" Width="700"
HorizontalAlign="Center">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<img id="fileImage" runat="server" src="" />
<asp:HiddenField ID="HiddenField1"
runat="server" Value='<%# Eval("Name") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Download" ItemStyle-
HorizontalAlign="Justify">
<ItemTemplate>
<asp:LinkButton ID="lnkDownload" Text='<%#
Eval("Name") %>' CommandArgument=
'<%# Eval("FullName") %>' runat="server"
OnClick="lnkDownload_Click"
OnClientClick="if (!confirm('Confirm ?'))
return false;"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</asp:Panel>
</ItemTemplate>
</asp:TemplateField>
protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string root = #FilePath;
string folder = GridView2.DataKeys[e.Row.RowIndex].Value.ToString();
GridView gvOrders = (GridView)e.Row.FindControl("gvOrders");
Label gvLabel = (Label)e.Row.FindControl("gvLabel");
Label gvFolder = (Label)e.Row.FindControl("gvFolder");
DirectoryInfo directory = new DirectoryInfo(root + "/" + folder);
FileInfo[] fileInfo = directory.GetFiles("*.*",
SearchOption.AllDirectories);
fCount = directory.GetFiles("*.*",
SearchOption.AllDirectories).Length;
gvLabel.Text = fCount.ToString();
long size = 0;
foreach (string file in Directory.GetFiles(root + "/" + folder,
"*.*", SearchOption.AllDirectories))
{
size += new FileInfo(file).Length;
}
gvFolder.Text = Math.Round((double)size / (double)(1024 * 1024),
2).ToString() + " MB";
LinkButton lnkDownload =
(LinkButton)e.Row.FindControl("lnkDownload");
HiddenField hf = (HiddenField)e.Row.FindControl("HiddenField1");
if (!String.IsNullOrEmpty(lnkDownload.Text))
{
HtmlImage image = (HtmlImage)e.Row.FindControl("fileImage");
image.Attributes.Add("src", GetIconForFile(hf.Value));
}
gvOrders.DataSource = fileInfo;
gvOrders.DataBind();
}
}
private string GetIconForFile(string fileText)
{
string extension = Path.GetExtension(fileText);
extension = extension.Trim('.').ToLower();
return "~/fileicons/" + extension + ".png";
}

You have a Nested GridView Structure and gvOrders is your inner GridView. So, you've to get LinkButton from inner GridView's row as like:
protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
GridView gvOrders = (GridView)e.Row.FindControl("gvOrders");
foreach (GridViewRow row in gvOrders.Rows)
{
LinkButton lnkDownload = (LinkButton)row.FindControl("lnkDownload");
HiddenField hf = (HiddenField)row.FindControl("HiddenField1");
if (!String.IsNullOrEmpty(lnkDownload.Text))
{
//... some code
}
}
}
}

Why Asp:GridView calls button click method in server side?

In my case i have asp:gridview with OnRowCommand calls server method but when i try to refresh my page manually then it also calls OnRowCommand method, i don't know where is the actual problem.
My Code:.aspx
<asp:gridview ID="Gridview1" runat="server" ShowFooter="true" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound" OnSelectedIndexChanged="CUG_OnSelectedIndexChanged" OnRowCommand="CugSubmit_onserverclick1" EnableViewState="true"BorderStyle="Solid" BorderColor="Gray" BorderWidth="1px" EditRowStyle-BorderStyle="Solid" EditRowStyle-BorderWidth="1px" EditRowStyle-BorderColor="Gray" HeaderStyle-BorderStyle="Solid" HeaderStyle-BorderWidth="1px" HeaderStyle-BorderColor="Gray" RowStyle-BorderStyle="Solid" RowStyle-BorderColor="Gray" RowStyle-BorderWidth="1px" EmptyDataRowStyle-BorderStyle="Solid" EmptyDataRowStyle-BorderColor="Black" EmptyDataRowStyle-BorderWidth="1px" SortedAscendingHeaderStyle-BorderStyle="Solid" SortedAscendingHeaderStyle-BorderColor="Black" SortedAscendingHeaderStyle-BorderWidth="1px">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Driver ID">
<ItemTemplate>
<asp:Label ID="lbl_Dri_Name" runat="server" Text='<%# Eval("VehicleNo") %>' Visible="false"></asp:Label>
<asp:TextBox ID="Dri_Name" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Dedicated">
<ItemTemplate>
<asp:Label ID="lbl_Vehitype" runat="server" Text='<%# Eval("VehicleType") %>' Visible="false"></asp:Label>
<asp:CheckBox ID="Vehitype" runat="server" AutoPostBack="true" />
</ItemTemplate>
</asp:TemplateField>
<asp:ButtonField CommandName="ProcessThis" Text="Submit" />
<asp:ButtonField CommandName="Select" ItemStyle-Width="30" Text="delete" HeaderText="Delete" />
<asp:TemplateField HeaderText="">
<ItemTemplate>
</ItemTemplate>
<FooterStyle HorizontalAlign="left" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add Row" onclick="ButtonAdd_Click" />
</FooterTemplate>
</asp:TemplateField>
</Columns></asp:gridview>
My code:.cs
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
GetCUGList();
}
}
protected void CugSubmit_onserverclick1(object sender, GridViewCommandEventArgs e)
{
DL.CustomerProfile ObjInput = new CustomerProfile();
BL.CustomerInputBL ObjCustomerInputBL = new CustomerInputBL();
if (e.CommandName == "ProcessThis")
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = Gridview1.Rows[index];
if (row.RowType == DataControlRowType.DataRow)
{
TextBox textBox = row.FindControl("Dri_Name") as TextBox;
CheckBox chk = row.FindControl("Vehitype") as CheckBox;
ObjInput.CustId = HttpContext.Current.Session["VidStr"].ToString();
ObjInput.CustName = HttpContext.Current.Session["FirstName"].ToString();
ObjInput.VehiNo = textBox.Text;
ObjInput.Update = "Insert";
if (chk.Checked == true)
{
ObjInput.VehiChk = 1;
}
else
{
ObjInput.VehiChk = 0;
}
string URL = "http://*****/CustomerServices.svc/CUGList/";
string OutStatus = ObjCustomerInputBL.GetConnection(ObjInput, URL);
var serializer = new JavaScriptSerializer();
//AllTypeDetails.Value = OutStatus;
DataSet data = JsonConvert.DeserializeObject<DataSet>(OutStatus);
string ds = data.Tables[0].Rows[0]["ErrorMessage"].ToString();
if (ds == "already exist")
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Vehicle Number has already registered')", true);
GetCUGList();
}
else if (ds == "Not Use")
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Vehicle Number is not in freightX')", true);
GetCUGList();
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Insert Request Sent to Admin')", true);
GetCUGList();
}
}
AddNewRowToGrid();
}
else if (e.CommandName == "ProcessThisUpdate")
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = Gridview1.Rows[index];
if (row.RowType == DataControlRowType.DataRow)
{
TextBox textBox = row.FindControl("Dri_Name") as TextBox;
CheckBox chk = row.FindControl("Vehitype") as CheckBox;
ObjInput.CustId = HttpContext.Current.Session["VidStr"].ToString();
ObjInput.CustName = HttpContext.Current.Session["FirstName"].ToString();
ObjInput.Update = "Update";
ObjInput.VehiNo = textBox.Text;
if (chk.Checked == true)
{
ObjInput.VehiChk = 1;
}
else
{
ObjInput.VehiChk = 0;
}
string URL = "http://*******/CustomerServices.svc/CUGList/";
string OutStatus = ObjCustomerInputBL.GetConnection(ObjInput, URL);
var serializer = new JavaScriptSerializer();
//AllTypeDetails.Value = OutStatus;
DataSet data = JsonConvert.DeserializeObject<DataSet>(OutStatus);
string ds = data.Tables[0].Rows[0]["ErrorMessage"].ToString();
if (ds == "already exist")
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Vehicle Number has already registered')", true);
GetCUGList();
}
else if (ds == "Not Use")
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Vehicle Number is not in freightX')", true);
GetCUGList();
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "", "alert('Update Request Sent to Admin')", true);
GetCUGList();
}
}
}
}

edit row in Gridview by button

I have a Gridview like this
<div id="gridScroll" style="width: 100%; height: calc(100vh - 310px); overflow: auto">
<asp:GridView ID="gridRoles" runat="server" Width="100%" AutoGenerateColumns="False" Font-Names="Arial" PageSize="12"
Font-Size="11pt" CssClass="textGrid" AlternatingRowStyle-BackColor="#CED8F6" HeaderStyle-BackColor="#F2F2F2"
AllowPaging="True" OnPageIndexChanged ="IndexChanged" OnPageIndexChanging ="PageChange" OnRowDataBound="gridroles_RowDataBound" OnRowEditing="editRow">
<Columns>
<asp:TemplateField HeaderText="Action">
<ItemTemplate>
<asp:Button ID="btnEdit" runat="server" text="Edit" OnCliendClick="btnEditClick()" />
<asp:Button ID="btnAdd" runat="server" text="Add" OnClientClick="btnAddClick()" Visible="false"/>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="First Name" HeaderText="First Name" />
<asp:BoundField DataField="Last Name" HeaderText="Last Name" /
</Columns>
<HeaderStyle BackColor="#A9BCF5" />
<AlternatingRowStyle BackColor="#CED8F6" />
</asp:GridView>
</div>
The data is bound from the back end
DataTable dt = new DataTable();
dt.Columns.Add("Action");
dt.Columns.Add("First Name", typeof(string));
dt.Columns.Add("Last Name", typeof(string));
for (int i = 0; i < credentials.Count; i++)
{
DataRow row1 = dt.NewRow();
row1["First Name"] = credentials[i].FirstName.ToString();
row1["Last Name"] = credentials[i].LastName.ToString();
dt.Rows.Add(row1);
}
DataRow row2 = dt.NewRow();
dt.Rows.Add(row2);
gridRoles.DataSource = dt;
gridRoles.DataBind();
I have this method btnEditClick() that is called when the Edit button is clicked.
function btnEditClick() {
var target = event.target || event.srcElement;
target.id = "btnEdit";
target.style.display = 'none';
var cancel = document.getElementById("btnCancel");
if (cancel != null)
cancel.click();
var row = target.parentElement.parentElement;
var cells = row.cells;
var hdn = document.createElement("input");
hdn.type = "hidden";
hdn.id = "hdnId";
hdn.name = "hdnId";
hdn.value = cells[1].innerHTML;
cells[0].appendChild(hdn);
for (var i = 2; i < 11; i++) {
//2, 3,4 , 10 textboxes
if (i == 2 || i == 3 || i == 4 || i == 10) {
var txt = document.createElement("input");
txt.value = cells[i].innerHTML;
txt.alt = cells[i].innerHTML;
txt.name = "txt" + i;
txt.maxLength = 50;
txt.style.width = "95%";
cells[i].innerHTML = "";
cells[i].appendChild(txt);
}
//this is for a dropdownlist for other columns in gridview I will add
if (i >= 5 && i < 10) {
var ddl = document.createElement("select");
var option = document.createElement("option");
option.setAttribute("value", "TRUE");
option.innerHTML = "TRUE";
ddl.appendChild(option);
var option2 = document.createElement("option");
option2.setAttribute("value", "FALSE");
option2.innerHTML = "FALSE";
ddl.appendChild(option2);
if (cells[i].innerHTML == "False") {
ddl.selectedIndex = 1;
}
ddl.name = "DDL" + i;
ddl.alt = cells[i].innerHTML;
cells[i].innerHTML = "";
cells[i].appendChild(ddl);
}
}
var btnCancel = document.createElement("button");
var Confirm = document.getElementById("cph_body_btnConfirm");
btnCancel.textContent = "Cancel";
btnCancel.id = "btnCancel";
btnCancel.onclick = cancelClick;
cells[0].appendChild(Confirm);
cells[0].appendChild(btnCancel);
return false;
The problem is, when I click the edit button it appears to go into edit mode. All the correct textboxes and dropdownlists show up but after about a second it disappears and the row goes back to what it looked like before the button was clicked. I'm not sure if the Gridview is refreshing itself. What would cause this problem?

Insert <p> tags with C#?

This is sort of a weird question, but is there a way to insert <p> tags around some imported text? I have a list of blog entries, each of which comes from its own source (I think it's a copy-paste job into Sitecore). All entries have an "Introduction" which is the blurb about the article. Some of these has <p> tags enclosing them and others do not (I'm not sure why and I can't change the source material--I can only have control on how it looks when it comes into the blog listing page) I'm thinking there should be a check to see if they do exist first, although I am not sure how that could be done.
This is the front end for the blog listing:
<asp:GridView ID="EntryList" runat="server" OnItemDataBound="EntryDataBound" AllowPaging="true" PageSize="3" AutoGenerateColumns="false" EnablePersistedSelection="true" DataKeyNames="EntryID" OnPageIndexChanging="grdTrades_PageIndexChanging" GridLines="None" PagerSettings-Position="TopAndBottom" CssClass="mGrid" pagerstyle-cssclass="pagination" rowstyle-cssclass="norm" alternatingrowstyle-cssclass="altColor" width="100%">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<li class="wb-entry-list-entry" >
<div class="imgOuter">
<div class="imgInner">
<asp:Image runat="server" ID="EntryImage" CssClass="wb-image" ImageUrl='<%# Eval("Image") %>' />
</div>
</div>
<div class="outer">
<div class="wb-entry-detail" >
<h2>
<%# Eval("Title") %>
</h2>
<div class="wb-details">
<%# Eval("EntryDate") %>
<%# Eval("Author") %><br />
<%# Eval("AuthorTitle") %>
</div>
<%# Eval("Introduction") %>
<asp:HyperLink ID="BlogPostLink" runat="server" CssClass="wb-read-more" NavigateUrl='<%# Eval("EntryPath") %>'><%# Sitecore.Globalization.Translate.Text("READ_MORE")%></asp:HyperLink>
<asp:PlaceHolder ID="CommentArea" runat="server">
<span class="wb-comment-count">
</span>
</asp:PlaceHolder>
</div>
</div>
</li>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
<%#Sitecore.Globalization.Translate.Text("NO_POSTS_FOUND")%>
</EmptyDataTemplate>
And this is the codebehind:
Database db = Sitecore.Context.Database;
protected const string DEFAULT_POST_TEMPLATE = "/layouts/WeBlog/PostListEntry.ascx";
protected Size m_imageMaxSize = Size.Empty;
protected void grdTrades_PageIndexChanging(Object sender, GridViewPageEventArgs e)
{
EntryList.PageIndex = e.NewPageIndex;
string tag = Request.QueryString["tag"];
BindEntries(tag);
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
string requestedToShowStr = Request.QueryString["count"] ?? "0";
int requestedToShow = 0;
int.TryParse(requestedToShowStr, out requestedToShow);
string startIndexStr = Request.QueryString["startIndex"] ?? "0";
int startIndex = 0;
int.TryParse(startIndexStr, out startIndex);
string tag = Request.QueryString["tag"];
Item CurrentItem = Sitecore.Context.Item;
BindEntries(tag);
string blogUrl = Sitecore.Links.LinkManager.GetItemUrl(Sitecore.Context.Item);
}
}
protected void BindEntries(string tag)
{
DataSet ds = new DataSet();
DataTable ResultTable = ds.Tables.Add("EntryTable");
ResultTable.Columns.Add("EntryID", Type.GetType("System.String"));
ResultTable.Columns.Add("EntryPath", Type.GetType("System.String"));
ResultTable.Columns.Add("Title", Type.GetType("System.String"));
ResultTable.Columns.Add("EntryDate", Type.GetType("System.String"));
ResultTable.Columns.Add("Author", Type.GetType("System.String"));
ResultTable.Columns.Add("AuthorTitle", Type.GetType("System.String"));
ResultTable.Columns.Add("Introduction", Type.GetType("System.String"));
ResultTable.Columns.Add("Image", Type.GetType("System.String"));
Item CurrentItem = Sitecore.Context.Item;
Item BlogStart = ScHelper.FindAncestor(CurrentItem, "BlogHome");
Item[] EntryArray = null;
if (tag == "")
EntryArray = BlogStart.Axes.SelectItems(#"child::*[##templatename='Folder']/*[##templatename='Folder']/*[(##templatename='BlogEntry' ) ]");
else
EntryArray = BlogStart.Axes.SelectItems(#"child::*[##templatename='Folder']/*[##templatename='Folder']/*[(##templatename='BlogEntry' and contains(#tags,'" + tag + "' )) ]");
ArrayList PostList = new ArrayList();
if (EntryArray != null)
{
foreach (Item EntryItem in EntryArray)
{
if (EntryItem.Fields["Post Date"].Value != "")
{
BlogEntryProcessor.BlogEntrys obj1 = new BlogEntryProcessor.BlogEntrys();
obj1.Description = EntryItem.Fields["Introduction"].Value;
obj1.Guid = EntryItem.ID.ToString();
obj1.Link = ScHelper.GetPath(EntryItem);
obj1.PostDate = formatDateCmp(EntryItem.Fields["Post Date"].Value);
obj1.Title = EntryItem.Fields["Title"].Value;
PostList.Add(obj1);
}
}
PostList.Sort();
PostList.Reverse();
foreach (BlogEntryProcessor.BlogEntrys obj in PostList)
{
DataRow dr = ResultTable.NewRow();
Item BlogEntry = db.Items[obj.Guid];
dr["EntryID"] = obj.Guid;
dr["EntryPath"] = ScHelper.GetPath(BlogEntry);
dr["Title"] = BlogEntry.Fields["Title"].Value;
dr["EntryDate"] = GetPublishDate(BlogEntry);
dr["Author"] = GetAuthor(BlogEntry);
dr["AuthorTitle"] = GetAuthorTitle(BlogEntry);
dr["Introduction"] = BlogEntry.Fields["Introduction"].Value;
//TODO: get Default Image
string EntryThumbImage = BlogEntry.Fields["Thumbnail Image"].Value;
string EntryImage = BlogEntry.Fields["Image"].Value;
string ArtImage = "http://fpoimg.com/140x140";
if (EntryImage != "")
{
Sitecore.Data.Fields.XmlField fileField = BlogEntry.Fields["Image"];
ArtImage = "/" + ScHelper.GetCorrectFilePath(fileField);
}
else if (EntryThumbImage != "")
{
Sitecore.Data.Fields.XmlField fileField = BlogEntry.Fields["Thumbnail Image"];
ArtImage = "/" + ScHelper.GetCorrectFilePath(fileField);
}
dr["Image"] = ArtImage;
ResultTable.Rows.Add(dr);
}
EntryList.DataSource = ds;
EntryList.DataMember = "EntryTable";
EntryList.DataBind();
}
}
protected string GetAuthorTitle(Item entry)
{
string OutName = "";
string AuthorID = entry.Fields["Author"].Value;
Item AuthorItem = db.Items[AuthorID];
if (AuthorItem != null)
OutName = AuthorItem.Fields["Author Title"].Value;
return OutName;
}
protected string GetAuthor(Item entry)
{
string OutName = "";
string AuthorID = entry.Fields["Author"].Value;
Item AuthorItem = db.Items[AuthorID];
if (AuthorItem != null)
OutName = string.Format("<br />By <a href='{0}'>{1}</a>", ScHelper.GetPath(AuthorItem), AuthorItem.Fields["Author Name"].Value);
return OutName;
}
protected string GetPublishDate(EntryItem CurrentEntry)
{
string pDate = GOJOHelper.FormatDate(((Item)CurrentEntry).Fields["Post Date"].Value);
return pDate;
}
protected void EntryDataBound(object sender, ListViewItemEventArgs args)
{
if (args.Item.ItemType == ListViewItemType.DataItem)
{
var dataItem = args.Item as ListViewDataItem;
var control = dataItem.FindControl("EntryImage");
if (control != null)
{
var imageControl = control as global::Sitecore.Web.UI.WebControls.Image;
imageControl.MaxWidth = m_imageMaxSize.Width;
imageControl.MaxHeight = m_imageMaxSize.Height;
var entry = dataItem.DataItem as EntryItem;
if (entry.ThumbnailImage.MediaItem == null)
imageControl.Field = "Image";
}
}
}
//string to use to sort the dates - must have 2 digit for month and day
private string formatDateCmp(string date)
{
// Set the dateResult for the TryParse
DateTime dateResult = new DateTime();
// Split the date up. ie. 20090101T000000
string[] TempStr = date.Split('T');
// Set the date to the characters before the T
date = TempStr[0];
// Insert a slash after the first 4 characters and after 7
date = date.Insert(4, "/").Insert(7, "/");
return date;
}

You can always do something like...
dr["Introduction"] = BlogEntry.Fields["Introduction"].Value
.Replace("\n\n", "</p><p>");
... or whichever escape characters are being used to denote separation of paragraphs in your source data. Alternatively, you could use Regex utilities. See Example 3 in this article for further reference.

Firstly in your GridView you've got
OnItemDataBound="EntryDataBound"
OnItemDataBound isn't an event of GridView I'm a little surprised that works!
Use
OnRowDataBound="EntryList_RowDataBound"
This is my common pattern for GridView's and Repeaters, noticed I've used a Literal control in the HTML, I'm not a mega fan of Eval! Also note that if (dataItem == null) just if there's a data item for that row, RowTypes like header and footer don't have any data, it's easier than the typical if(e.Row.RowType == DataControlRowType.Header) etc
<asp:GridView ID="EntryList" runat="server" OnRowDataBound="EntryList_RowDataBound" AllowPaging="true" PageSize="3" AutoGenerateColumns="false" EnablePersistedSelection="true" DataKeyNames="EntryID" OnPageIndexChanging="grdTrades_PageIndexChanging" GridLines="None" PagerSettings-Position="TopAndBottom" CssClass="mGrid" PagerStyle-CssClass="pagination" RowStyle-CssClass="norm" AlternatingRowStyle-CssClass="altColor" Width="100%">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<li class="wb-entry-list-entry">
<div class="imgOuter">
<div class="imgInner">
<asp:Image runat="server" ID="EntryImage" CssClass="wb-image" ImageUrl='<%# Eval("Image") %>' />
</div>
</div>
<div class="outer">
<div class="wb-entry-detail">
<h2>
<%# Eval("Title") %>
</h2>
<div class="wb-details">
<%# Eval("EntryDate") %>
<%# Eval("Author") %><br />
<%# Eval("AuthorTitle") %>
</div>
<asp:Literal runat="server" ID="IntroductionLiteral"/>
<asp:HyperLink ID="BlogPostLink" runat="server" CssClass="wb-read-more" NavigateUrl='<%# Eval("EntryPath") %>'><%# Sitecore.Globalization.Translate.Text("READ_MORE")%></asp:HyperLink>
<asp:PlaceHolder ID="CommentArea" runat="server">
<span class="wb-comment-count"></span>
</asp:PlaceHolder>
</div>
</div>
</li>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
<%#Sitecore.Globalization.Translate.Text("NO_POSTS_FOUND")%>
</EmptyDataTemplate>
</asp:GridView>
.cs file
protected void EntryList_RowDataBound(object sender, GridViewRowEventArgs e)
{
var dataItem = e.Row.DataItem as EntryItem;
if (dataItem == null)
return;
var imageControl = e.Row.FindControl("EntryImage") as global::Sitecore.Web.UI.WebControls.Image;
var introductionControl = e.Row.FindControl("IntroductionLiteral") as Literal;
if (imageControl == null || introduction == null)
return;
imageControl.MaxWidth = m_imageMaxSize.Width;
imageControl.MaxHeight = m_imageMaxSize.Height;
if (dataItem.ThumbnailImage.MediaItem == null)
imageControl.Field = "Image";
if (!string.IsNullOrEmpty(data["introduction"]))
introductionControl.Text = string.Format("<p>{0}</p>", data["introduction"].ToString().Replace("\n\r", "</p><p>"));
}
Also if you've got a list of Sitecore objects why don't you just bind that to the GridView, then in your RowDataBound method get the item back
var dataItem = e.Row.DataItem as Item;
and then do the logic in the BindEntries method in there, would prob be cleaner code and you wouldn't have to use stupid DataSets! Just an idea.

How to transfer item from one datalist to other datalist?

I have a datalist
<asp:DataList ID="dlstImage" runat="server" RepeatDirection="Horizontal" RepeatColumns="5"
CellSpacing="8">
<ItemTemplate>
<asp:ImageButton ID="Image" runat="server" ImageUrl='<%#"~/Controls/ShowImage.ashx?FileName=" +DataBinder.Eval(Container.DataItem, "FilePath") %>'
OnCommand="Select_Command" CommandArgument='<%# Eval("Id").ToString() +";"+Eval("FilePath")+";"+Eval("Index") %>' /><br />
<asp:Label ID="lbl" runat="server" Text="Figure"></asp:Label><%# dlstImage.Items.Count + 1%>
</ItemTemplate>
</asp:DataList>
In which i am binding the image after uploading through uplodify upload, now i have one more datalist
and two btn up and down,
<asp:ImageButton ID="ibtnMoveUp" runat="server" ImageUrl="~/App_Themes/Default/Images/moveup.bmp"
Style="height: 16px" ToolTip="MoveUp The Item" />
<asp:ImageButton ID="ibtnMoveDown" runat="server" ImageUrl="~/App_Themes/Default/Images/movedown.bmp"
ToolTip="MoveDown The Item" />
<asp:DataList ID="dlstSelectedImages" runat="server" RepeatDirection="Horizontal"
RepeatColumns="5" CellSpacing="8">
<ItemTemplate>
<asp:ImageButton ID="Image" runat="server" /><br />
<asp:Label ID="lbl" runat="server" Text="Figure"></asp:Label><%# dlstImage.Items.Count + 1%>
</ItemTemplate>
</asp:DataList>
My both datalist is in the same webuser control, datalist1 and datalist2 and I have 2 btn up and down, when i select one image from datalist1 and click on down btn then the selected image should move to datalist2. How to do that? someone please help me,

You need to handle the ItemCommand event of one DataList in which you have to copy the selected data (image) into another dataSource of two DataList and remove that item from the datasource of one DataList.
Markup:
<asp:DataList
ID="DataList1"
runat="server"
OnItemCommand="PerformMove"
>
<ItemTemplate>
<br /><%#Eval("Text") %>
<asp:Button ID="btn1"
runat="server"
Text="Move"
CommandName="cmd"
CommandArgument='<%#Eval("Text") %>'
/>
</ItemTemplate>
</asp:DataList>
<asp:DataList ID="DataList2" runat="server">
<ItemTemplate>
<br /><%#Eval("Text") %>
</ItemTemplate>
</asp:DataList>
Code-behind (.cs)
public class Data
{
public string Text { get; set; }
public override int GetHashCode()
{
return Text.GetHashCode();
}
public override bool Equals(object obj)
{
return GetHashCode() == obj.GetHashCode();
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
List<Data> list1 = new List<Data >()
{
new Data() { Text="One"},
new Data() { Text="Two"},
new Data() { Text="Three"},
};
List<Data> list2 = new List<Data>();
Session["list1"] = list1;
Session["list2"] = list2;
DataList1.DataSource = Session["list1"];
DataList1.DataBind();
DataList2.DataSource = Session["list2"];
DataList2.DataBind();
}
}
protected void PerformMove(object source, DataListCommandEventArgs e)
{
if (e.CommandName == "cmd")
{
List<Data> list1 = Session["list1"] as List<Data>;
List<Data> list2 = Session["list2"] as List<Data>;
list1.Remove(new Data() { Text=e.CommandArgument.ToString() });
list2.Add(new Data() { Text = e.CommandArgument.ToString() });
DataList1.DataSource = Session["list1"];
DataList1.DataBind();
DataList2.DataSource = Session["list2"];
DataList2.DataBind();
}
}

I am using this code and its working well for me.
ArrayList ImgArry = new ArrayList();
path = objGetBaseCase.GetImages(TotImgIds);
ImgArry.Add(SelImgId);
ImgArry.Add(SelImgpath);//image name
ImgArry.Add(SelImgName);//image path
//path.Remove(ImgArry);
List<ArrayList> t = new List<ArrayList>();
if (newpath.Count > 0)
t = newpath;
t.Add(ImgArry);
newpath = t;
for (int i = 0; i < newpath.Count; i++)
{
ArrayList alst = newpath[i];
newtb.Rows.Add(Convert.ToInt32(alst[0]), alst[1].ToString(), alst[2].ToString(), i);
}
dlstSelectedImages.DataSource = newtb;
DataBind();
path = objGetBaseCase.GetImages(TotImgIds);
for (int i = 0; i < path.Count; i++)
{
ArrayList alst = path[i];
tb.Rows.Add(Convert.ToInt32(alst[0]), alst[1].ToString(), alst[2].ToString(), i);
}
dlstImage.DataSource = tb;
DataBind();